Comparison of long-term total ozone observations from space-and ground-based methods at Zhongshan Station,Antarctica  

作　　者：ZHANG Lei ZHENG XiangDong BIAN LinGen 

机构地区：[1]Chinese Academy of Meteorological Sciences,Beijing 100081,China [2]School of Atmospheric Physics,Nanjing University of Information Science and Technology,Nanjing 210044,China [3]College of Meteorological Observation,Chengdu University of lnformation and Technology,Chengdu 610225,China

出　　处：《Science China Earth Sciences》2017年第11期2013-2024,共12页中国科学（地球科学英文版）

基　　金：supported by previous expeditions organized by the National Polar Commission and the China Polar Research Center;The European Space Agency and NASA provided relevant satellite data;This work was supported by the Polar Research Specialization during 2013–2017(Grant No.CHINARE-04-01-02);National Natural Science Foundation of China(Grant No.41775031).

摘　　要：Total ozone errors for satellite observations at Zhongshan Station in Antarctica are characterized using their relative difference （RD） from ground-based Brewer observations during 1993-2015. All satellite total ozone observations slightly overestimated ground-based ones （with RD less than 4%）. This is in contrast to conclusions drawn from global-scale validation studies, where main ground-based reference stations are located in middle latitudes. Given multiple total ozone data per day at Zhongshan Station, observed by a sun synchronous orbit satellite, measurements at the lowest solar zenith angle （SZA） show greatest consistency with Brewer ones, having an overall RD of-0.02-1.15%. Algorithm-retrieved total ozone data from the Total Ozone Mapping Spectrometer （TOMS）, including Solar Backscatter Ultra Violet （SBUV）, TOMS-Earth Probe （EP）, Ozone Monitoring Instrument （OMI）-TOMS, show best agreement with ground-based values; followed by the Global Ozone Measurement Experiment-type Direct Fitting （GOD-FIT） algorithm for the GOME-2A, and finally the Differential Optical Absorption Spectroscopy （DOAS） --Algorithm retrieved products for satellites-detectors of Global Ozone Measurement Experiment （GOME）, Scanning Imaging Absorption spectroMetr for Atmospheric CHartographY （SCIAMACHY）, and OMI. Satellite total ozone RD presents some statistical characteristics, but no specific trends. DOAS and GOME-2A algorithms have values that significantly increase, when the SZA is above 60°-70°, whereas values for GOME-2A decrease, when the SZA is 80-85°. Satellite total ozone RD is a minimum, when the Brewer total ozone is 300-350 DU, with an obvious increase in RD values for DOAS- and GOME-2A, when the Brewer total ozone is 150-300 DU. Satellite total ozone RD obviously increases, as the time difference between satellite overpasses and Brewer measurements grows. Specifically, RD rises as the absolute time difference increases to more than 4 h, yielding an OMI-TOMS RD of more than 10% aTotal ozone errors for satellite observations at Zhongshan Station in Antarctica are characterized using their relative difference(RD) from ground-based Brewer observations during 1993–2015. All satellite total ozone observations slightly overestimated ground-based ones(with RD less than 4%). This is in contrast to conclusions drawn from global-scale validation studies, where main ground-based reference stations are located in middle latitudes. Given multiple total ozone data per day at Zhongshan Station, observed by a sun synchronous orbit satellite, measurements at the lowest solar zenith angle(SZA)show greatest consistency with Brewer ones, having an overall RD of.0.02–1.15%. Algorithm-retrieved total ozone data from the Total Ozone Mapping Spectrometer(TOMS), including Solar Backscatter Ultra Violet(SBUV), TOMS-Earth Probe(EP), Ozone Monitoring Instrument(OMI)-TOMS, show best agreement with ground-based values; followed by the Global Ozone Measurement Experiment-type Direct Fitting(GOD-FIT) algorithm for the GOME-2A, and finally the Differential Optical Absorption Spectroscopy(DOAS) —Algorithm retrieved products for satellites-detectors of Global Ozone Measurement Experiment(GOME), Scanning Imaging Absorption spectroMetr for Atmospheric CHartographY(SCIAMACHY), and OMI.Satellite total ozone RD presents some statistical characteristics, but no specific trends. DOAS and GOME-2A algorithms have values that significantly increase, when the SZA is above 60°–70°, whereas values for GOME-2A decrease, when the SZA is80–85°. Satellite total ozone RD is a minimum, when the Brewer total ozone is 300–350 DU, with an obvious increase in RD values for DOAS-and GOME-2A, when the Brewer total ozone is 150–300 DU. Satellite total ozone RD obviously increases,as the time difference between satellite overpasses and Brewer measurements grows. Specifically, RD rises as the absolute time difference increases to more than 4 h, yielding an OMI-TOMS RD of more than 10% as this difference increases to 8 h. The DOAS-RD

关 键 词：Relative difference （RD） Satellite total ozone Brewer total ozone Zhongshan Station ANTARCTICA 

分 类 号：P412.27[天文地球—大气科学及气象学]